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# NodeChangeListener

`public interface NodeChangeListener`
`implements EventListener`

java.util.prefs.NodeChangeListener

A listener for receiving preference node change events.

See also:

- `Preferences`
- `NodeChangeEvent`
- `PreferenceChangeListener`

## Summary

### Public methods
`abstract void` | `childAdded(NodeChangeEvent evt)` This method gets called when a child node is added.
`abstract void` | `childRemoved(NodeChangeEvent evt)` This method gets called when a child node is removed.

## Public methods

### childAdded

    public abstract void childAdded (NodeChangeEvent evt)

This method gets called when a child node is added.

Parameters
`evt` | `NodeChangeEvent`: A node change event object describing the parent and child node.

### childRemoved

    public abstract void childRemoved (NodeChangeEvent evt)

This method gets called when a child node is removed.

Parameters
`evt` | `NodeChangeEvent`: A node change event object describing the parent and child node.

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